I actually think she was a bit daft, but I'm trying to argue the other side of the coin.
They should do. Clearly not at Arsenal because wasn't Bin Laden a fan?
I think it is ridiculous, assuming they weren't instructed to frisk cuddly toys, but there are a lot of people within stewarding who lack common sense. It doesn't destroy the day for anyone.
Some people make jugment calls which may see stupid at the time, but their income depends on it. Perhaps she wqs briefed that people were smuggling in flares/weapons/alcohol and she should be extra vigilant.
It might seem daft on the outside, but would you be willing to trust someone you had...